Brick manufacture.



H. N. KILBY.

BRICKMANUFACTURE. f

APPL-lcArloN HLED JUNE 30.1913.

1,231,267 Patentedlune 26, 1917.

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BRICK MANUFACTURE.

APPLICATION FILED JUNE 30. I9I3.

1,231,267.. Patented June 26,1917.

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H. N. 'KILBY.

BRICK IVANUFACTURE. PPucATloN FILED JUNE so, |913.

1,23 l ,26% Patented June 26, 1917.

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H. N. KlLBY.

BRICK IVIANUFACTURE.

APPLICATION FILED JUNE 30. I9I3.

1,231,267Q Patented June 26,1917.

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H. N. KILBY.

BRICK- MANUFACTURE.

APPUCATlON FILED UNE 30, 19|3. 1,231,267., Patented June 26, 1917.

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H. N. KILBY.

BRICK MANUFACTURE.

APPLICATION FILED JUNE 30, 1913.

1,23 1,267.. Patented June 26, 1917.

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H. N. KILBY.

BRICK NIANUFACTURE.

APPLICATIQII FILED JUNE 39.1913.

Patented J une 26, 1917.

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`H. N. KILBY.

BRICK MANUFACTURE. APPLICATION FILED JUNE 30,1913.

Pntlented June 26, 1917.

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H. N. KILBY. BRICK MANUFACTURE.

APPLICATION FILED IUNE 30.1913.

Patented June 26, 1917.

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H. N. KILBY.

BRICK MANUFACTURE.

APPLICATION FILED IuNE 30,1913.

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Patented June 26, 1917.

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H. N. KILBY.

BRICK MANUFACTURE.

` APPLICATION FILED JUNE 30| |913 3,211,267.' Patented June 26, 1917.

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H. N. KILBY.

BRICK MANUFACTUHE.

MPLICATION FILED JUNE 30,'1913.

1,231,26?, www June 26, 1917.

l? SHEETS-SHEET Il elw/hmmm NITE STATE@ ATENT HERBERT N. KILBY, OF CLEVELAND, OHIO, ASSIGNOR TO JOSEPH F. KILBY AND JOI-IN GEHRING. BOTH OF CLEVELAND, OHIO.

BRICK IVIANUFACTURE.

Specication of Letters Patent.

Patented .lf une 26, 19117.

Application filed June 30, 1913. Serial No. 77,728.

T0 all wwm t may concern:

Be it known that I, HERBERT N. KILBY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Brick Mainlfacture, of which the :following is a specification.

My invention relates to the art of brick manufacture and resides essentially in the provision of a machine for accomplishing this end by its operation upon suitable mixtures of sand and lime or other mixtures wherein cement forms one of the principal ingredients. I have found that bricks of a very substantial and efficient nature may be manufactured by performing suitable operations upon such mixtures as cement with pulveriZed sandstone, shale and, in fact, a great variety of pulverized stone, as well as a suitable mixture of cement with cinders, or asbestos, or mineral wool, etc.

In the art of brick manufacture, one of the principal essentials is to provide a brick wherein the pores are considerably closed to overcome the excessive water absorbent properties. This has hitherto been one of the obstacles preventing the successful manufacture of this type of brick. Experience has demonstrated to me that bricks of the type referred to above, can be manufactured with low moisture absorbing properties by the provision of a suitable mixture subjected to very intense pressure. In my endeavors along this line, I have availed myself of the fact that there is a certain point where the practical limit of compression is reached for the various mixtures. In other words, I have found it desirable to compress the brick forming mixtures up to that point where any additional pressure provides little or no additional compressing of the brick. Then this point has been reached, I have found it practically useless, from a commercial standpoint, to create pressures of greater intensities and I have, therefore, endeavored to determine that point of the various mixtures which I have referred to above, as being their compressive limits.

In carrying out the above principle, I have provided a machine to successfully perform this function. Bricks as they are presented to the trade today, are all of what is known as a standard size and it was,therefore, necessary to construct my machine to produce bricks also of a standard size. To do this, I have provided a mold with means for filling the same with a suitable mixture and subsequently compressing` this mixture as referred to above. This compressing I do in two separate actions, although it is obvious that any number of compressive actions may be given, if desired. I-Iowever, by the provision of at least two compressive actions, I have found that I can veneer onto each brick a suitable facing'. This is greatly enhanced by the intense pressures used by me. Further, where at least two compressions of the mixture, as well as two fillings are resorted to, which I have shown as one embodiment of my invention, the extent to which the mixture is initially compressed, may be regulated, while the dista-nce between what forms the bottom of each brick and the faces of the dies used in the second compressing action, is always maintained constant. The amount that the initial mixture is compressed, should then be so regulated that the limit of compression of the mixture as a whole, during the second com-A pressing action, is reached. In this manner, the limit of compression of the entire mixture is made to come at that point when the mixture has been compressed to the dimensions of a standard brick.

In the preferred construction of my machine, I provide a plurality of filling actions for each mold and a plurality of compressing actions operating upon the mixtures in the mold, these4 filling and compressing actions alternating. All of these actions I find desirable to carry on simultaneously where suiiicient power is at hand and in this manner, the length of time required in the manufacture of brick, is considerably lessened over when the several operations are carried on at different times. During this simultaneous compressing and filling' action, I have also provided a structure for stripping the formed bricks out of their molds and it will, therefore, be apparent that the various steps required in the manufacture of these bricks by my machine, are carried on simultaneously.

Another feature of novelty in my machine, resides in the provision of a structure for making practically the entire operation automatic. I have provided a plurality of mold boxes that are entirely independent of each other, and that are also disconnected from each other. lvfeans are provided for causing these mold boxes to travel automatically in an endless cycle of operation and requiring no attention of any skilled labor. To this end, I have found it necessary to definiteh7 locate the filling, compressing' and stripping mechanism apart distances commensurate with the length of each mold box. Vhei-e the various operations are carried on simultaneously, one row of mold boxes is moved forward a definite distance after each operation to move them into positions opposite the succeeding operation required. To make the cycle of operation automatic, means must, therefore, be provided for returning each mold box to .its starting point and also for feeding each mold box into its line of operation. Structures for accomplishing these ends, have been provided by me.

In the present embodiment of my invention, l have resorted. to the use of independent pallets to be placed beneath each mold box, these pallets being in this position during the filling, compressing` and stripping operations. These pallets are fed into a position to be ultimately beneath each of the mold boxes by a structure which also preferably is operated automatically. have also provided a novel type of stripper mechanism, wherein there is provided a surface upon which the stripped brick are adapted to rest after the stripping operation, there being a separation between this table and the mold box during the stripping` operation. In this manner, the bricks are prevented from falling down upon the stripper table during the stripping oper-ation and the bricks are further prevented from breaking by being slightly suspended from the mold box before the entire stripping operation is completed.

To increase the utility of my machine, means are also provided for automatically conveying the stripped brick away from the stripping mechanism, as well as returning each mold box to its starting position after the stripping operation, as has been already referred to.

Other features of novelty are contained in my stripping mechanism as well as the compressing structure and the feeding mechanism, as will be apparent from the detailed description of the preferred embodiment of my invention as shown in the accompanying drawings, in which similar characters of reference designate corresponding parts, and in which:

Figure l is a side elevation of my assembled machine, the initial operation being performed at the right handy end of the structure and the final operation atthe left hand end,

Fig, 2 is an enlarged end view of the structure shown in Fig. 1 and looking toward the right,

Fig. 2A is a top plan view of the platen or press head shown at the top left hand end of' Fig. 1,

Fig. QB is a detail perspective of an operating cam shown partly in Fig. 2,

vFig. 3 is an enlarged end view of the structure shown in Fig. 1, looking toward the left, and having a portion of the structure broken away,

Fig. 3A is a side elevation of the remaining structure omitted on line s-s of Fig. 3,

Fig. 3B is a cross section taken on line 53E- 3B of Fig. 3 and looking in the direction of the arrows,

Fig. 3C is a side elevation of the type of pusher shown in Fig. 3,

Fig. 3D is a detail perspective of oneof the cams shown in Fig. 3,

Fig. 4L is an enlarged section on two planes along line rof Fig. l and extending from the left of this figure to the vertical line m-m,

Fig. 5 is an enlarged section on two planes along the other half of line 4-5 of Fig. 1 and extending from the vertical line to the right, with a portion of the structure removed along line ,ye-y,

Fig. 5A is a continuation of the structure terminating on line fy-y, at lower right hand corner of Fig. 5,

Fig. 5B is a longitudinal detail section of a pusher element shown in plan at the right of Fig. 5,

Fig. 5C is a skeleton plan view of a mold box shown in position at the right of Fig. l,

Fig. 5D is a perspective of a pallet upon which the mold box shown in Fig. 5C is adapted to rest,

Fig. 6 is a vertical longitudinal section of the assembled machinev and taken on line 6 6 of Fig. 4 and looking in the direction of the arrows,

Fig. 7 is a continuation of the remainder of the assembled machine shown in Fig. 6 and taken on line 7-7 of Fig. 5 and looking in the direction of the arrows,

Fig. 8 is an enlarged section taken on line 8-8 of Fig. l and looking in the directie of the arrows,

Fig. 8A is a fragmentar7 perspective of the stripper cam shown in section in Fig. 8,

Fig. 8B is a perspective of the roller bracket also shown in section in Fig. 8,

Fig. 9 is an enlarged section taken on line 9-9 of Fig. l and looking in the direction of the arrows,

Fig. 9A is an enlarged detail view of one of the brackets supporting the guide angles for guiding the mold boxes,

Fig. l0 is an enlargedsection taken on line 10--1O of Fig. l and looking in the direction of the arrows,

Fig. 10A is a perspective view of the main transfer cam shown in section at the left of Fig. 10,

Fig. l11 is an enlarged section taken on line 11-11 of Fig. 1 and looking in the direction of the arrows,

Fig. 11A is an enlarged detail plan, partially in section, of the pusher rod shown in toggles,

Fig. 12B is a perspective view of another of the bell cranks forming a portion of the press toggles,

Fig. 12C is a partial perspective view of one of the toggle links used with the above bell cranks,

Fig. 12D is a perspective view of half of one of the main shaft cap brackets serving as a fulcrum bearing for the toggle bell cranks,

Fig. 12E is a perspective view of one of the auxiliary bearings for the press bell cranks,

Fig. 18 is a detail side elevation of a portion of the stripper mechanism from the opposite side from that shown in Fig. 1 and looking .from the line 1 -13 of Fig. 4t,

Fig. 13A is a side view of the cam supporting bracket projected from Fig. 13,

Fig. 13B is a perspective of the cam lever shown in Fig. 13 and shown detached from the above cam bracket,

Fig. 13C is a perspective of a portion of the mechanism used to elevate the stripper table,

Fig. 13D is a side elevation of a slightly modified form of one of the lever arms shown in Fig. 13C,

Fig. lll is a detail view ferred type of mold box structure,

Fig. 14A is a side elevation of the structure shown in Fig. 14,

Fig. 15 is a side elevation of the pallet feed mechanism, shown in conjunction with a portion of the remaining structure,

Fig. 15A is a longitudinal vertical section of the mold box shown in Fig. 14:,

F ig. 16 is a side elevation of one of the press toggles showing a knock-out cam.

Fig. 16A is a detail section of the connection between the toggles and the press table,

plan of the preused with this Fig. 16B is a perspective view of thev knock-out cam,

Fig. 16C is a perspective view of the dust gathering box, and,

17 is an enlarged longitudinal section through a portion of the stripper structure, taken on line 17-17 of Fig. 4. and showing this structure slightly enlarged from that shown in Fig. 6.

Before entering upon a detailed description of these drawings, I will state in a general way the operation of my machine. The

main feed table is provided with a plurality of abutting mold boxes and these mold boxes are intermittently fed forward to pass from one end of the machine to the other. .ln so passing, they are successively7 forced under a feed hopper, then. onto a press table, again under a second feed hopper, from there onto another press table and finally, onto a stripper table where the formed bricks are removed from the mold boxes. At the starting and finishing ends of the machine, these mold boxes are also automatically moved into position for forward movement and into position for return movement respectively.

The starting end of the machine, is that end where the mold boxes are initially passed under the first feed hopper. Referring to Fig. 1, l have shown the starting position of one mold box, marked A. It will be understood that the main feed table supports a continuous strand of these mold boxes, but for purposes of description, showing this one is believed to be sufficient. 1t will be noted that this mold box A rests upon that portion of the main feed table termed the entrance table and designated by the reference numeral 1. This entrance table is bolted in its horizontal position by two vertically extending end pieces designated 2 and 3. lhe lirst operation required in the manufacture of brick by my machine, is that of moving' the mold box A to a position beneath the rst feed box designated in its entirety by the reference numeral 4l. To accomplish this, attention is directed to Figs. 1, 5, 7 and 11. 1t will be noted that this entrance table has its upper surface provided with longitudinal trackways as indicated at 5 6, shown in detail in Fig. 5B is designed to in Fig. 11 and that a` pusher reciprocate therein. rFhis pusher 6 is provided with an upwardly projecting shoulder 7 adapted to abut the rear edge of the mold box and with horizontally flaring ears 8 adapted to slidingly engage the trackways in the entrance table, upon which it is positively held in position by the superimposr tion of clamping strips 9 and 10 respectively, these strips being screwed to the cntrance table by means of the screws 11.

ln order that the forward movement of the mold boxes to a position beneath the feed box L may be made automatic, l have provided the pusher 6 with downwardly i projecting pierced ears 12 and 13 through which a rod lat, threaded upon both its ends, is adapted to slidingly pass. This rod 141 is attached to an endless cable 15 through suitable couplings 16 and is also provided with a spring 1.7 bea-ring against the ear 13 at one end and against adjustable nuts 18 upon the rod at its other end. The endless cable 15, referred to, is adapted to pass over a sheave 19 carried in a suitable bearing 20 

